13009638 has 8 divisors (see below), whose sum is σ = 26019288. Its totient is φ = 4336544.

The previous prime is 13009613. The next prime is 13009639. The reversal of 13009638 is 83690031.

It is a sphenic number, since it is the product of 3 distinct primes.

13009638 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13009639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1084131 + ... + 1084142.

It is an arithmetic number, because the mean of its divisors is an integer number (3252411).

Almost surely, 2^13009638 is an apocalyptic number.

13009638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13009638 is a wasteful number, since it uses less digits than its factorization.

13009638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168278.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 13009638 is about 3606.8875779542. The cubic root of 13009638 is about 235.1915625299.

Adding to 13009638 its reverse (83690031), we get a palindrome (96699669).

The spelling of 13009638 in words is "thirteen million, nine thousand, six hundred thirty-eight".